ICAR NET 2018 (I)

ASRB NET 2018 (I) QUESTION PAPER

1.      Agar Agar is produced from – Red algae (Gelidium spp)

2.      Stem gall of coriander is caused by – Protomyces macriosporus

3.      Bird eye spot with red margin is characteristic symptoms of – Grapes anthracnose

4.      In bacteria 70S ribosomes are present in - cytoplasm

5.      Who reported 1^st time tobacco necrosis satellite virus – Kassanis, 1962

6.      Broom rape is an obligative parasite on which crops -      

7.      Pierse diseases of grapes is caused by – Xylela fastidiosa

8.      Shape of growth curve of bacteria – bimodial curve

9.      Viroids consists of  - ss RNA

10.   Fungicide with both upside (acropetal) and downside (basipetal) movement – forsetyl Al, metalaxyl

11.  Strobulurin interferes with – inhibit electron transfer in mitochondria, disrupting metabolism.

12.  Food reserve of bacteria – Poly β – hydroxyl butyrate

13.  1^st bacterium completely genome sequenced – Xylela fastidiosa (Simpson, 200)

14.  Mode of action for Triazole – inhibit sterol biosynthesis

15.  Virus strain used in cross protection – mild strains

16.  Time period between inoculation/infection – incubation period

17.  Blister blight of tea is caused by – Exobasidum vexans

18.  Organomercural fungicide – Cerasan & Cerasan wet

19.  Virus that affect G^-ve bacterium is known as – bacteriophage

20.  Grape fan leaf virus is transmitted by – Xiphinema index (nematode)

21.  Black heart of  potato is caused by – O₂ deficiency

22.  Father of molecular plant pathology – Noel Kein

23.  Most sensitive technique for detecting pathogen – ELISA (10ng/ml)

24.  Apple proliferation is cause by – Phytoplasma

25.  1^st Fungus completely genome sequenced – Magnoporthae grisea (Dean, 2005)

26.  Fungicide applied prior to fungal infection – Protectant fungicide

27.  Pore size of laminar air flow chamber – 0.3 µm

28.  A. R (K84) active against – A. tumefaciens

29.  Basidiospores of smut fungi-

30.  Prunus necrotic ring spot virus is transmitted by -  Pollen, seed

31.  Xanthomonas axinopodis pv. tunicae affects – bacterial blight of pomegranate

32.  Systemic acquired resistance induce plants by external application of – Salicylic acid

33.  White hallow around brown spot of tomato -

34.  EPIDEM  is for – late blight of tomato and potato

35.  Cuscuta is a – Total stem parasite

36.  White fly transmitted viruses under group – Geminivirus

37.  Fungicide used as a plant defence activator - propicanozole

38.  Indian stem rust rules was written by – Nagarajan and Singh

39.  Papya ring spot virus transmitted by –Aphids

40.  Intracellular PGPR - Bradorhizobium

41.  Monograph of Fusarum was written by – C. Booth

42.  Indication of citrus greening –

·        CTV – kagzige lime

·        Citrus greening – sweet orange

·        Citrus exocortosis – trifoliate orange

·        Phytoplasma –periwinkle

43.  Root stock against collar rot -                    (MM104, M9, MM106, M793)

44.  Pathogenic growth and disease can be estimated by –

45.  Cosmotic fungicide - Tridemorph                       ,

46.  Rescue treatment fungicide - Triademefon

47.  MOA for carbendazim – disrupts cell wall

48.  Khiara disease of rice can be controlled by – application Znso₄

49.  Water medium preservation for fungicide culture -                  (*Castallin)

50.  14 opines produced during pathogenis of –

51.  Phytoplasma infected phloem cells while staining gives which colour – Blue

52.  Define vertifolia effect – loss of horizontal resistance while breeding for vertical resistance

53.  Phytoplasma sensitive to – tertacycin

54.  Humped uredospore is present in – hemileia

55.  In PCR technique which antibody is used – Taq polymerase

56.  Formation of pingwheel in cytoplasm is a characteristic symptom of which group of virus – potyvirus

57.  RTV contains –

58.  Withing syndrome of ‘kresek phage’ occurs in – bacteria blight of rice

59.  Angular leaf spot of cotton survives as  -

60.  1^st recorded plant pathogen – gaint mistletoe 

61.  Cleistothecia dichotomously branced at –

62.  Hartig nets are found in – ectomycorrhizae

63.  Year of ICTV - 1973    , * ICNV – 1966

64.  Endospore forming bacterial genus – Bacillus, clostridium

65.  Exclusion by legislation is known as – plant quarantine

66.  Which race cause moko wilt disease – race 2

67.  Leaf wetness period for apple scab –9hrs

68.  Which crop is not sensitive to ozone damage –

69.  Autoclave temperature at 15lb/inch² for 30mit –121.6 ^oC

70.  Syringomycin is a- antibiotic

71.  Erwinia family – Enetrobacteriaceae

72.  Ratton stunting of sugar cane is caused by – leifsonia xyli subsp. xyli

73.  Stage absent in demicyclic rust – lack of uredial stage

74.  Tumour inducing principle of crown gall was discovered by – new and kerr

75.  Symptoms of downy mildew of pearl millet –

76.  Xanthomonas axinopodis pv. tunicae affects -                              (leaf, fruits , stem etc)

77.  Citrus gummosis is caused by – Phytophthora citrophthora

78.  Conidial germination Pyricularia grisea, relative humidity – 90 – 95 %

79.  V shaped chloritic lesions are  charecteristic symptoms of –  papya ring rot

80.  Watery soft rot of carrot is caused by – Erwinia caratovora pv. caratovora

81.  Dyes used for gram staining – methylene blue

82.  Collar rust is due to                   (copper, boran, potassium, zinc)

83.  Foot cells vesicles and phalloides are present in –  Aspergillus

84.  Critical stage for Taphrina deformans if one spary remains -

85.  Late blight of potato in Ireland is due to – Phytophthora infestans

86.  Oyster mushroom – Plerotus sojar caju

87.  Blossom end rot of tomato is caused by – Ca deficinecy

88.  Gram positive contanis 85 % of mucopeptides

89.  Gram negative lack of lipo teichoic acid

90.  Multiplication of viroid is by – RNA polymerse II

91.  Which spore is haploid- Ascospore

92.  Bacteria respiration is increased is due to – binding and unbinding of oxidative phosphorylation

93.  Budding spores are – Blastopores

94.  Disease dispersed y water splash –

95.  Bacteria that affect another bacteria – B’delovibrio

96.  1^st cloned plant toxin –Tab toxin

97.  AQ 10 is used against – grapes powdery mildew

98.  Mutant that not synthasize essential metabolites -      (auxo, bio, myxo, semitroph)

99.  Hypersentive reaction occurs in –

100.                      Bunch of flagella on both ends – lopotrichous

·        Indicator plant for potato spinder tuber viroid – Tomato

·        RT –PCR used for detection of -                                  (virus, viroid, virliferous vect, all)

·        Technique to produce virus free plant – meristem tip culture

·        1^st imperical mycologist in india in 1905 –E. J. Butler

·        White tip panicle of rice is cause by – Aphelenchoides besseyi

·        L form of bacteria means – Cell wall lacing bacteria

·        Protein accumulate in the –

·        Greeinish  growth at lower surface -             (enation)

·        Buck eye spot of tomato 1^st infects –

·        Foot rot of lilium --------------

·        Yellowish transculent spots are charesteristic symptoms of –

·        1^st avirulent gene by -                (staskawicz, 1984)

·        Most of the plant pathogenic bacteria are – ve

·        Candidates phytoplasma less non helical, colonize, phloem nad insects given by-

·        Bitter pit of apple – imbalance water supply            (deficiency)

·        Taro blight pf colacasi -                  (ahwina, sakin 2, pooran pat, kach)

·        Single celled light coloured conidia -          (cephalosporium, nigrospora, pyricularia, cladosporium)

·        Contagium vivum fluidum was given by –  Beijerinck

·        Muriform septations was found in – alternaria

·        1^st line i defence mechanism in plants -            (thick cell wall, phenolic acids, more protein, ect)

·        Chemical to control black tip of mango – application of borax

·        Loose smut is a – internally seed borne pathogen

·        Mycovirus – ds RNA

·        Phytophthora infestans surives as – infected tubers